Spring bed-bottom.



4PATENT-ED 15mm, 1906/.

' M- W.' INGRAHAM. SPRING BED BOTTOM. APPLIOATI'ON FILED AUG. so, 190e.

NIMAHNHHM w A NOR/VE YS THE Nonni: Plrsns Co.. WASHINGTON, n. c.

MATTHEW W. INGEAHAM, -OE GLACE BAY, NOVA vSCOTIA, cANADA.v

SPRING BED-BOTTOM..

Speccation of Letters Patent.

Patented Dec. 25, 1906.

Application filed August 30,1906. Serial No. 332,656. l

10 all whom it may concern:

Beit known that I, MATTHEW W. INGRA- HAM, a subject of the King ofEngland, residing at Glace Bay, in the Province of Nova Scotia, Dominionof Canada, have invented a new and useful Bed Spring-Bottom, of whichthe following isl a specification.

This invention has relation to spring-bottoms for beds; and it consistsin the novel construction and arrangement of parts, as hereinafter shownand described.

The object of the invention is to provide a device adapted to be easilyand readilyoperated for taking'up the slack bulging tension ofbed-springs.

The ydevice consists, primarily, of a bar to which one end of the springis attached, and which in turn is ada ted to be connected with thebedosts. o the other end of said spring a simi ar bar is attached7 butwhich is mounted to slide longitudinally of guides carried by a thirdbar. The last said bar is provided with means for attachment with theopposite bed-posts. A screw is journaled in the last said bar and passesthrough the perforation inthe intermediate bar and engages a threadprovided in a collar located at the middleof a yoke which bears at itsupper ends upon said intermediate bar.r

In the accompanying drawings, Figure l is' a bottom view ofthebed-spring. Fig. 2 is a side elevation of the same. f

The device comprises a bar 1, which is provided with hooks 2 2, whichare adapted to pass around either the head or foot bedposts. The saidbar l rests at its ends upon said Arails of the bed. One end of thebedspring 3 is attached to the bar 4. The bar 5 is provided with thehooks 6, which are adapted lto pass around the posts at the oposlte endof the bed from the posts engaged by the hooks 2. The guide-pins 7 7 areattached to th'e bar5 and .pass through perforations in the bar 4.Thesaid bar 4 is adapted to move longitudinally of the said pins 7 7.The yoke 8 bears at its ends against the side yof the bar 4. The saidyoke 8 is provided at its middle with an internalthreaded collar 9. Ascrew 10 is. journaled A in the bar 5 and passes through a perforation11, provided in the bar 4, and the threaded end of said screw engagesthe thread of the collar 9.

From the above description it is obvious that as the screw 10 is rotatedthe bar 4 will be drawn toward or moved away from the bar 5, accordingto the direction in which the said screw 10 is rotated. When the bar 4is turned toward the bar 5, the slack of the spring 3' is taken up andthe tension of the said spring is increased. The reverse is the ase whenthe bar 4 is moved away from the Having described my invention, what Iclaim asnew, and desire to secure by Letters Patent, is-

A bed-spring' comprising bars, means attached to said ars for fixing thesame at opposite ends of the bed-frame, a spring attached to one end ofone of said bars, a movable bar located intermediate of the first saidbars and being attached to the opposite end of said spring, guidescarried by the bar unat- Atached to the spring and engaging' the saidmovable bar, av yoke bearing at its ends against the said movable baradjacent said guides and having at its middle an internallythreadedcollar, a screw j ournaled to the bar unattached lto the spring andengaging the threadoil the' collar of said yoke.

4 In testimony that I claim the foregoing as my own I have heretoaI'IiXed my signature in the presence of two witnesses.

MATTHEW W. INGRAHAM.

Witnesses:

JOHN J. MCKENZIE, NEIL D. SMITH.

